Acura 2009 RL Owner's Manual page 489

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Tires
It is best to replace all four tires at
the same time. If that is not possible
or necessary, replace the two front
tires or two rear tires as a pair.
Replacing just one tire can seriously
affect your vehicle's handling.
Also be sure you use only TPMS
specific wheels. If you do not, the
tire pressure monitoring system will
not work on that tire.
If you ever need to replace a wheel,
make sure the wheel's specifications
match those of the original wheel
that came on your vehicle.
Replacement wheels are available at
your Acura dealer.
486
Installing improper tires on your
vehicle can affect handling and
stability. This can cause a crash
in which you can be seriously
hurt or killed.
Always use the size and type of
tires recommended in this
owner's manual.
2009 RL
Wheels and Tires
Wheels:
18 x 8.0J AL (TPMS)
Tires:
P245/45R18 96V
See page 526 for DOT tire quality
grading information, and page
528 for tire size explanation.